Cleaning nozzle



March 13, 1934. F, m.Hnlsmrm 1,950,796

I dramma Nozina" v Filed April l5, 1933 ff? Ven vlo ff.

Patented Mar. 13, 1934 r- UNITED' STATES Pivrlezrvr OFFICE v 1 Claim.

ing or the like as will insure more concentrated"v and accurate response to the directing of the stream by voluntary manipulation and consequently more prompt and efficient cleansing.

The'invention proceeds upon the principle of distorting the discharge end of a spreading nozzle in such manner that the bore of the nozzle, usually cylindrical, will gradually merge with a transversely shaped cavity which increases the dimension of the delivered volume of iiuid in one direction transversely and reduces its dimension in a direction perpendicular to the increased dithe shape of a flat ribbon of substantial thickness and without undue spreading in the said direction of greater dimension or dispersion of the fluid with consequent loss of its definition at the confines of the ribbon.

An important feature of the invention resides in means whereby the expansive forces and their undue spreading effect, which are usually inci-l dent to the escape of a body of liquid through a constricted outlet, are eliminated in the functionng of the present nozzle through means of a transverse wall at the delivery end of the transversely shaped cavity, past which wall the liquid is permitted to escape through means of a plurality of bores parallel with the axis of discharge, of sufficient number to subdivide the escaping stream; also a'pair of constricting lips extending beyond the said transverse wall parallel with the axis of discharge, spaced apart in the direction of the minor dimension of the shaping cavity and between which the escape ports of the wall deliver; the space between these conning lips being substantially the same as the diameter of the escape openings or discharge ports of the wall so as to continue the constriction of the stream in the direction of its thickness but without special limitation or constriction in the direction of the major dimension.

In the preferred embodiment of the invention, in

mensio'n and thereby lends to the-escaping stream addition to being of a diameter corresponding to the spacing of the constricting lip, the discharge ports are spaced apart or have the walls which intervene between them in the direction of the major stream dimension, of substantially the same dimension as the diameter of the said ports.

In the accompanying drawing, in which the preferred embodiment of the invention is shown by way of illustration- Figure 1 is a plan view; 'Figure 2 aside l"ele- 65 vation; and Figure 3 an end view of the nozzle, the relative internal dimensions and confines of the bore, transversely shaped and discharge ports being shown in dotted lines.

l represents a barrel having a cylindrical bore 2 and a transversely shaped cavity 3, the said cavity being shaped by distorting the bore 2 to-an increased dimension in one direction transverse to the axis of the barrel, and constricting the said bore in the transverse dimension perpendicular to. the said increased dimension, with the result that the said transversely shaped cavity will have the form shown by dotted lines in Figures 1 and 2. Extendingacrosa, the discharge end of the cavity 3 isv 'a wall fi provided with a plurality of -80 bores or discharge ports 5,Which ports extend perpendicularly to the wall and parallel with the axis of stream delivery. Beyond the said wall 4, and extending parallel with the axis of stream delivery, are a pair of constricting lips 6 spaced 85 apart a distance substantially identical with the diameter of thebores 5 and receiving the discharge of said bores between them. By this arrangement of subdivided escape for the cleansing fluid, parallelism with the axis of stream delivery and with each of the ports through which escape is permitted, and the spacingof the parallel constricting lips 6 in correspondence with the diameters of the dischargeorts, a ribbon discharge is produced` whichf by reason of its substantial thickness but generally at form, proves veryl effective in dislodging the foreign material upon a surface to be cleaned.

In the preferred embodiment, six ports 5 are preferably employed in defining the degree of subdivision of the escaping uid volume; and the walls which separate these discharge portsaand which are arranged in series with them in the direction of the major dimension of the stream-` shaping cavity, are preferably of substantially the same dimension as the bores.

What is claimed is:

A spreading nozzle for delivering liquid against a surface to be cleansed, said nozzle comprising a barrel having a bore and a delivery end having a transversely shaped cavity in axial continuation axis of discharge; and said nozzle having beyond the said wall a pair of stream-restricting lips extending parallel with the axis of delivery, spaced apart a distance corresponding substantially with the transverse dimension of the jet openings4 and continuing the constriction of the delivered stream in the direction of the minor dimension of the shaping cavity.

FRANK M. HILGERINK. 

